[Bug 723674] Make external sink(s) compatible with gst-gl

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=723674
  GStreamer | gst-plugins-gl | git

--- Comment #3 from Matthew Waters <ystreet00 at gmail.com> 2014-02-07 09:50:15 UTC ---
(In reply to comment #2)
> (In reply to comment #1)
> > What is the problem with that? GL buffers should have the GL texture upload
> > meta on them, which then allow e.g. cluttersink to get things into a texture.
> 
> The GL contexts have to shared to do that. Otherwise the texture that comes
> from gst-gl would not be usable within the clutter gl context.
> 
> > 
> > Same goes for custom application video sinks, or applications could also
> > directly use the gst-plugins-gl API to handle the memory.
> 
> Yup. And at least for sharing it would need to create a GstGLContext to wrap
> the clutter gl context.  (gst_gl_context_new (clutter_gl_context) , see
> attached file)

Also requires a way to share this information.  Probably through the ALLOCATION
query with our own GstGLMeta.

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